WEEK6 作业

来源：互联网发布：生物圈二号知乎编辑：程序博客网时间：2024/05/16 05:36

1、

#include "stdio.h"main(){int x;     printf("输入一个整数：");    scanf("%d",&x);    printf("%o %x %d",x,x,x);}

2、

#include "stdio.h"main(){    float x;     printf("please input:");    scanf("%f",&x);     printf("%8.3f",x); printf("%09.3f",x);    }

3、

#include "stdio.h"main(){    int x;      printf("please input:");    scanf("%d",&x);    if (x>-1&&x<10)      printf("ok");    else      printf("not ok");}

4、

#include "stdio.h"main(){    int x;     printf("please input:");    scanf("%d",&x);    if(x>1000)     printf("big");    if(x>=100&&x<=1000)     printf("middle");    if(x<100)     printf("small");}

5、

#include "stdio.h"main(){    int a;    printf("please input:");    scanf("%d",&a);    switch(a)    {     case 1:printf("January\n");break;     case 2:printf("February\n");break;     case 3:printf("March\n");break;     case 4:printf("April\n");break;     case 5:printf("May\n");break;     case 6:printf("June\n");break;     case 7:printf("July\n");break;     case 8:printf("August\n");break;     case 9:printf("September\n");break;     case 10:printf("Optober\n");break;     case 11:printf("November\n");break;     case 12:printf("December\n");break;     default :printf("not valid month number"); }}

6、

#include "stdio.h"main()   {  int a;      int sum=0;      for(a=2;a<=100;a=a+2)      sum=sum+a;      printf("sum is %d",sum);    }

7、

#include "stdio.h"void main(){    int a,b;    b=0;    a=2;    while(a<=100)    {    b=b+a;        a=a+2;     }    printf("%d",b);}

8、

#include "stdio.h"void main(){    int a,b;    a=2;    b=0;    do{     b=b+a;     a=a+2;    }while(a<=100);          printf("%d",b);}

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